Arnold Frances is a notable inventor based in Glen Allen, VA (US), recognized for his significant contributions to the field of materials science. With a total of 11 patents to his name, Frances has made remarkable advancements in adhesive technologies and filtration systems.

Latest Patents

Frances's latest patents include "Aramid filled polyimides having advantageous thermal expansion properties" and "Micropulp for filters." The first invention focuses on polyimide-based adhesives that possess a coefficient of thermal expansion (CTE) equal to or below 50 ppm/°C. These adhesives contain a polyimide base polymer, which is present in the overall adhesive in an amount ranging from 25 to 95 weight percent. The polyimide base polymer typically has a glass transition temperature (Tg) between 150 to 300°C and a CTE above 50 ppm/°C. The inclusion of aramid micro fiber filler, in amounts from 5 to 75 weight percent, helps to lower the CTE of the adhesive, allowing it to match the CTE of various materials such as metals and silicon wafers.

The second patent, "Micropulp for filters," describes a filter made from a blend of polymeric fibrous pulp and micropulp. The fibrous pulp has a length-weighted average fiber length between 0.5 and 1.1 mm, while the micropulp has a volume-weighted average fiber length between 1.0-200.0 micrometers. The ratio of the average fiber length of the fibrous pulp to the fibrous micropulp is greater than or equal to about 4:1, enhancing the filter's performance.

Career Highlights

Arnold Frances has built a successful career at E.I. DuPont De Nemours and Company, where he has been instrumental in developing innovative materials. His work has not only advanced the company's product offerings but has also contributed to the broader field of materials science.

Collaborations

Frances has collaborated with esteemed colleagues, including Lee J. Hesler and John Chu Chen, to further enhance the impact of his inventions. These collaborations have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Arnold Frances's contributions to adhesive technologies and filtration systems exempl

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